Loom having carrier which inserts weft in loop form



E. SMITH. LOOIYI HAVING CARRIER WHICH INSERTS WEFT IN LOOP FORM.

I APPLICATION FILED NOV. I 1918- I I 1,410,531 8, I Patented Mar. 21, 1922.

3 SHEETS-SHEET 1.

E. SMITH. I I L0 0M HAVING CARRIER WHICH INSERTS WEFT IN LOOP FORM.

I I APPLICATION FILED NOV-1, I918 1,410,51 8. Patented Mar- 21, 1922.

3 SHEETS-SHEET 2.

II I III I III M I I III I II I III I I I I II II I IIIIIII III I II

IWII

III

IIIIIII E. SMITH. I LOOM HAVIIIIB CARRIER WHICH INSERTS WEFT IN LOOP FORM.

Y APPLICATION FILED NOV- I, I9I8- 1,410,51 8;, Patented Mar. 21, 1922.

3 SHEETS-SHEET 3.

carries star 1E3. GLAND, ASSSIGNOR TO TiSliIITH LUGIVI 5WD FABRIC COMPANY LIMITED, 03. BRADZFQRD, ENGLAND.

LOOM HAVING CARRIER WEZICH INSERTS 'WEF'I IN LOO i ,aiosie.

Specification of Letters Patent.

Patented Mar. 21, 1%22.

Application filed. November 1, 1818. Serial No. 260,641.

England, have invented a certain new and useful Improvement in Looms Having Carriers Vi hich Insert Vieft in Loop Form, of which the following description, having reference to the accompanying sheets of drawings, is a specification.

This invention relates to the type or class of looms wherein a weft carrier propelled or picked in a similar manner to the throwing or projecting of a common shuttle, is made use of, and in which said carrier takes the weft from a supply, of weft, on each side of the loom, in looped form through the shed or warp to the opposite side of said loom, and that in alternate succession, thus in each shed of warp two threads or multiples of two threads are at all times inserted. In accordance with my said inven tion I so construct the weft carrier and the devices for operating in conjunction therewith, that I am enabled to maintain the approximate speed of a plain or common loom and yet supply the weft continuously as aforesaid, while the devices I employ enable me to produce approximately perfect selvedges on both sides of the fabric, and this I effect by arranging the weft carrier to move in two stages for each pick of weft. That is to say the carrier in its first stage is thrown by the picking mechanism and is arrested in an appropriateposi tion'relatively with the edge of the warp threads at the opposite side of the loom until the weft that it has supplied is" about to be beaten up by the lay, when it is moved a stage further, thus depositing the weft it carries either accurately within the selvedge or as much beyond. same as is desired. To disengage the loop of weft from the weftcarrier at the completion or just prior to the completion of the movement of said weft carrierv through the last stage of its motion at each pick, I employ cutting means mounted within said carrier, together with means for operating same atthe exact period or time desired to attain the object stated.

In order that my said invention may be readily understood I have hereunto apl ake use of pended sheets of drawings illustrative thereof to which by figures and letters reference made in the following description.

Fig. l is a front sectional elevation showing the slay-board of a loom and the parts supporting same together with sufficient of the framework of said loom to illustrate the application of-my impr red devices.

Fig. 2 is a plan illustrating the slay board and other parts in their approximate positions when about to beat-up the weft.

3 is a similar plan to Fig. 2 but illus 'trates the position of the slay board as when approaching the completion of the heatingup of the weft.

Fig. -l an elevation of a portion of a sla'yboard and reed with my improved weft carrier and other parts in connection there with as seen from the front of the loom. The end of the carrier to the right is shown in section in order to show the formation of a part hereinafter explained.

Fig. 5 is a sectional end elevation taken on line A. B of. parts shown by a and as seen in the direction indicated by the arrow a.

Fig. 6 is a plan of the parts shown by Fig. 1-, the end of the carrier to the right being again shown in section.

Fig. 7 is a sectional plan of the end to the left on the carrier. and shows the parts therein in altered positions as compared with the positions they occupy in 6.

Figs. 8 ant. 9 are plan and elevation respectively showing )fili; of the mechanism used for moving the weft carrier through the last stage of its motion as hereinafter expla ined.

Figs. 4:, 5, enlarged seal figures.

C C indicate the end frames of a loom, D the top rail of said loom, E the. breast beam thereof and F the slay-board or lav while G G indicate the lay-swords.

To attain the, object of my inv ntion I weft carrier 2 which, as is sliown, is of the character of a common or ordinary shuttle, the same being thrown from end to end f the lay F alternately by the pickers 3 and 3 as is the shuttle in a common or ordinary loom. Instead of the weft carrier 2 being charged with a bobbin 7, S and 9 are drawn to an e as compared with the other or cop of weft, in accordance with my invention it is arranged to have at its two extremities hooks or tongues 4- and 4: each of which extends from near its respective tip 5 or 5 inwards towards the centre of the carrier, 2, and within a groove 6 formed in said carrier by reason of the upper edges 7) and c of said carrier 2- being made to extend beyond the body part thereof. These upper edges 7) and c are made to extend higher than the tongues a and 1 so that they will act as shields for said tongues during the time that the carrier 2 is travelling through the shed, thus preventing either of said tongues engaging with or laying hold of any of the warp threads.

These tongues 4 and l reach from their respective tips 5 and 5 in such a manner a to form a groove 7 or 7 between them and the body of said tips, thus when any thread is laid hold of by either of the tongues l or at, on the moving of the carrier in the proper direction, said thread is drawn down within the groove 7, T as the case may be, that is to say as to whether the carrier is moving in one direction or the other.

The carrier 2 thus constructed is made to travel as before stated from end to end of the lay F, while extending from the hand rail 8 carried by the lay swords G G on each side thereof, are guiding plates 9, 9 the lower edges of which project downwards towards the shuttle race on the lay F so that asthe carrier 2 travels from end to end of same the lower edges of said thread guides 9 and 9 will enter the groove (3 within said carrier.

The weft threads 10 and 10 which are supplied at each side of the loom from any source as a bobbin, cop or the like mounted in any appropriate position relatively thereto, are caused to pass through their respective guiding plates, firstly through the guiding eye (Z, down the front of said plates 9, 9 and through the guiding slot 7 so that they may finally pass beneath the lower edges of their respective plates 9, 9 and extend towards the seivcdge of the fabric ll as shown by Fig. 2 bywhieh arrangement on the carrier 2 being thrown or projected across the lay F the tongue 1 or a at one or other end thereof opposite to the leading end of the carrier, will lay hold of said thread by passing over same in the known manner as shown by Fig. 5, thus on the carrier 2 con tinuing its motion the loop of thread is carried through the warp to the opposite side to that from which it is taken. On the carrier 2 reaching the picker 3 or 3 it is arrested. preferably in position just prior to the tip and its tongue moving beyond the edge of the warpas shown in Fig. 2. This arresting of the carrier 2 in this position is preferably effected by the picker 3 or 3 being acted upon by its respective outer end 103 or 103 of the usual check straps, which has its said en'dsarranged to take loosely over their respective picker spindles 10 i and 10st to enable same to act in the identical manner-to the check strap in a common loom having an ordinary shuttle, althoughit is obvious'that other arresting devices may be madeuse of to attain the same object. Each of these straps has one of its ends fixed to its adjacent end frame C or C while its other end takes loosely over its picker spindle 104: or 10%, thus as the lay F moves away from the position of beatup it stretches the said straps and causes them to move their respective pickers 3 and 3,to meet" the incoming weft carrier to arrest its motion as is well known. On the lay returning to beat-upthe weft the tension on the straps 108 and 103 is'removed by its said advancing movements, thus permit ting thecarrier 2 to beresta'rted into motion as is hereinafter explained On the carrier 2 having reached its said position, by the lay F continuing its motion to beat up the shot of weft it will carry said carrier 2 so that it will engage with the outer end or g of an operating lever 12 or 12 pivoted upon the framework of the loom at IL, /L- respectively. The outer ends g, of these levers are made to enter their re spective slots is, 0 which are made through the front walls of the shuttlejboxes so that they may extend into a slot 2 formed in the carrier 2, when said *arrier happens to be within its box, thus as the slay board moves forward, the outer surface of the shuttle box fronts 13, 13 will come in contact with the bowls m, m pivoted upon said levers 12 and 12 respectively causingrsaid levers to travelin a longitudinal direction over said shuttle box fronts 13 and 13 while moving in a direction towards'the front of the loom. thusthe outer ends g, will engage with its respective end of the slot 2 in the carrier to complete the longitudinal movement. of said carrier by forcing it "further i'nto its shuttle box thus bringing same clear of the edge of the fabric as desired. As shown by Fig. 3theitip 5 of the carrier 2 is brought to the edge of the fabric being woven and by said movement into this position the tension of the double thread of weft 10 is maintained While itis being brought into an appropriate relative position with the outer edge or selvedge of the fabric; The receding of the lay after beating up the weft,

carries the shuttle'boxes and'the weft carrier 2 clear of the levers and 12 so that the pickers 3 and 3 may then freely actuate I In order to relieve the weft carrier 2 of the loop of weft delivered or deposited by it in the shed, provided the loop end of said weft is desired to lie \vithin'or closely to the selvedge of the fabric, I mount within each end of the carrier 2 a spring actuated knife is alldlf which normally lie within grooves s s in the shuttle tips 5 and These knives or cutters 1 1-, 1 1 are actuated by levers 15, 15; pivoted at t and t respectively within the carrier 2, as said carrier 2 is brought towards the front of the loom when beating up the weft (somewhat as shown by Fig. 3) by reason of said. lever 15 or 15 coming in contact with theouter end of a spring actuated lever 16" or with a spring actuated sliding buffer piece 16 as the case may be. As the buffer piece 16 is a mechanical equivalent for the spring actu ated lever 16, I make use of either device as I may find advantageous. its the lever 16" is operated by its spring 1T when it is free it assumes a normal position with its inner arm drawn against a stop piece a as shown by Fig. 2. By the mot-ion of the lay F during the beatu p of the weft causing said levers 15 or 15 to come in contact with the operating devices 16 and 16 said levers are caused to oscillate upon their pivots 2 t which moves them from their stop pins w, 10 to cause the cutting edge or end of the respective knife 1%, lat to travel crosswise the slot 7 (as shown by Fig. 7 or 7) within which the weft 10 or 1O lies, thus severing or cutting said weft and leaving its free ends in proper positions rleative to the edge of the fabric as will be understood.

As means for protecting the wooden part of the carrier 2 at the two ends of the slot 2 therein, against any undue wear by contact with the ends 9, of the operating levers 12, 12; I fix metal projecting pieces m, 60 therein, as shown by Figs. t and 6.

hen making use of my improved carrier 2 and means as hereinbefore described for actuating same in connection with a fast reed loom, I arrange it to be of sufficient length to reach from the edge of the fabric being woven to the interior of the shuttle box so as to operate the swell lever in said shuttle box to raise the stop rod of the loom in manner well known, while at all times and in every class of lo-om Idesire said carrier to be sufficiently long to reach as far within the shuttle box as is required for the motions of the picker to effectively operate same, thus. when I have narrower fabrics to weave I preferably make use of a longer carrier instead of making such carrier ad justable or extensible to meet the requirements of broader or narrower fabrics.

W hen using a fast reed loom, the pressure of the swell-levers through which my weft carrier actuates the stop rod, may be relieved during the picking operations by any well known devices which are known for relieving thesame pressure in a commonshnttle loom.

As is hereinbefore stated instead of making use of two spring actuated levers such as 16 I may make use of one such lever and a sliding buffer 16 which is held in a forward position under the actions of its spring 1'? as is shown to the left of Figs. 2 and 3.

The operating levers 12 and 12' as well as those for actuating the cutter levers 15 and 15 are made adjustable so that the time of action for completing the longitudinal movement of the weft carrier after each pick may be varied or regulated so as to take place at any desired time after the arrival of said carrier at the side of the 100111 and prior to the beating in of the weft. The cutting of the weft may also be regulated to take place by the adjustment of the parts operating the lovers 15 and 15 as stated. I make use of any of the well known methods already proposed for supplying the weft threads at the desired tension from each source of supply as will be understood.

When it is desired to form any particular kind of selvedge it is obvious that I ma make use of any well known selvedge she ding mechanism for that purpose.

In the carrying out of the novel functions to be performed by a Weft carrier in accordance with my invention, I have herein described the simplest and, so far as I believe, the best devices for attaining their respective results, but I would have it understood that many and varied modifications of and equivalents for those described may be made use of without departing from the essential features of my invention.

Such being the nature and object of my said invention, what I claim is-:

1. In a loom, a weft carrier, pickers for propelling said carrier, tongues near the extremities of said carrier for laying hold of the weft, weft supplying mechanism, means for temporarily arresting the motions of said carrier in a definite position relatively to the edge of the fabric and means for further moving said carrier beyond the edge of said fabric.

2. In a loom, a weft carrier, pickers for propelling said carrier, tongues near the extremities of said carrier for laying hold of the weft, weft supplying devices which enter a groove in the carrier, means for temporarily arresting the motions of said carrier in a definite position relatively to the edge of the fabric and means for further moving said carrier beyond the edge of said fabric.

3. In a loom, a weft carrier, pickers for propelling said carrier, tongues near the extremities of said carrier for laying hold of the weft, cutters mounted upon said carrier, means for actuating said cutters weft supplying mechanism, means for temporarily arresting the motions of said carrier in a definite position relatively to the edge of the fabric and means for further moving said carrier beyond the edge of said fabric. 4. In a loom, a we'tt carrier pickers for propelling said carrier, tongues near the extremities of said carrier for laying hold of the weft, weft supplying mechanism, means for temporarily arresting the motions of said carrier in a definite position relatively to the edge of the fabric and levers mounted upon the framework of the loom to engage with the carrier and complete its motion.

5. In a loom, a weft carrier, pickers for propelling said carrier, tongues near the extremities of. said carrier for laying hold of the weft, weft supplying mechanism, weft cutters mounted on the carrier, resiliently held devices for operating the weft cutters.

(3. In a loom, a Weft carrier, pickers for in-opelling said carrier, tongues 011 said carrier formed to terminate in grooves near the pointed extremities thereof, Weft supplying mechanism means for temporarily arresting the motions of said carrier in a definite position relatively to the edge of the fabric and means for further moving said carrier beyond the edge of said fabric,

7. In a loom, a weft carrier, pickers for propelling said carrier tongues near the ex treniities of said carrier for laying hold of the weft, weft supplying mechanism, means for temporarily arresting the motions of said carrier in a definite position relatively to the edge of the fabric and adjustable levers mounted upon the framework ofthe loom' to engage with the carrier and complete its motion.

EDlVAR-D SMITH. 

